Cyclometalated Au(III) Complexes Suitable for Electroluminescent Devices

摘要

Monocyclometalated Au(III) complexes, cis-[(N̂C)AuL1L2] and cis-[(N̂C)Au L1̂L2] represented by generic chemical formulae 1a and 1b respectively with ligands L1 and L2 being either similar (L1=L2) or dissimilar (L1<>L2) but with at least one of either (L1 or L2) comprising a sigma-donating carbanionic group is described here. Also described are Au(III) complexes of formula in which L3 denotes a neutral donor ligand bound in a tridentate fashion. The complexes depicted by the formulae 1a, 1b and 1c in the present invention are suitable as emissive phosphorescent organometallic materials in OLEDs.